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山东大学学报 (工学版) ›› 2026, Vol. 56 ›› Issue (1): 105-113.doi: 10.6040/j.issn.1672-3961.0.2024.289

• 土木工程 • 上一篇    

钢渣UHPC受拉力学性能及破坏机理试验研究

郭敏1,2,韩林轩1*,李京军1   

  1. 1.内蒙古科技大学土木工程学院, 内蒙古 包头 014010;2. 内蒙古自治区土木工程安全与耐久性重点实验室(内蒙古科技大学), 内蒙古 包头 014010
  • 发布日期:2026-02-03
  • 作者简介:郭敏(1983— ),女,内蒙古包头人,讲师,硕士生导师,博士,主要研究方向为超高性能混凝土. E-mail: 2021975@imust.edu.cn. *通信作者简介:韩林轩(1998— ),男,河北廊坊人,硕士研究生,主要研究方向为超高性能混凝土. E-mail:1229266505@qq.com
  • 基金资助:
    内蒙古自治区直属高校基本科研业务费资助项目(2024QNJS111)

Experimental investigation of tensile mechanical properties and failure mechanisms of steel slag ultra-high performance concrete

GUO Min1,2, HAN Linxuan1*, LI Jingjun1   

  1. GUO Min1, 2, HAN Linxuan1*, LI Jingjun1(1. College of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
    2. Inner Mongolia Autonomous Region Key Laboratory of Civil Engineering Safety and Durability(Inner Mongolia University of Science and Technology), Baotou 014010, Inner Mongolia, China
  • Published:2026-02-03

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摘要： 以低碳环保为目标,探索将固废钢渣应用到超高性能混凝土(ultra high performance concrete, UHPC)中,制备绿色环保钢渣UHPC。通过轴向拉伸试验,研究钢渣微粉替换水泥、钢渣骨料替换石英砂及同时替换时不同掺量,对UHPC轴拉全曲线、力学指标等的影响规律,并分析钢渣UHPC受拉破坏机理。试验结果表明,替换钢渣微粉或钢渣骨料后,UHPC轴向抗拉强度下降,但仍能保持UHPC基本水平。钢渣掺量对材料延性影响明显,单独掺钢渣微粉,试件延性增强;单独掺钢渣骨料,试件延性降低。混合掺量较小时,材料延性较好,呈多裂缝破坏形态。通过分析钢渣UHPC各受拉应力、应变特征值,给出钢渣掺量建议值。

关键词: 超高性能混凝土, 钢渣微粉, 钢渣骨料, 拉伸性能

Abstract: With the goal of low-carbon environmental protection, the application of solid waste steel slag in ultra-high performance concrete(UHPC)was explored to develop green and environmentally friendly steel slag UHPC. The research examined the effect of varying contents of steel slag powder and steel slag aggregate on the tensile properties of steel slag UHPC through axial tensile tests. Specifically, it analyzes the effects of replacing cement with steel slag powder and quartz sand with steel slag aggregate at different contents on the axial tensile curve and mechanical indices of UHPC. The tensile failure mechanisms of steel slag UHPC were also explored. The results indicated that while the axial tensile strength of UHPC decreased with the inclusion of either steel slag powder or steel slag aggregate, it remained within acceptable limits. The material's ductility is impacted by the type and amount of steel slag used; specifically, adding steel slag powder alone enhanced ductility, whereas adding steel slag aggregate alone reduced it. When the combined content of steel slag powder and aggregate was relatively low, the material exhibited good ductility and a multi-crack failure mode. Based on the analysis of the tensile stress and strain characteristics, an optimal steel slag content for steel slag UHPC was recommended.

Key words: ultra-high performance concrete, steel slag powder, steel slag aggregate, tensile properties

中图分类号: 

  • TU528
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